<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>华丞臧(runoob.com)</title>
</head>
<body>
    <h1>hello world</h1>
    <p>我的第一个段落。</p>
    <form action="html_form_action.php" method="get">
        Username: <input type="text" name="user"><br>
        Password: <input type="password" name="passwd"><br>
        <input type="submit" value="Submit">
        </form>
</body>
</html>